Burglar-alarm system.



R. W. VAIL.

BURGLAR ALARM sYsTM.

APPLICATION FILED AUG-7. |916.

1 ,288,363 Patented Aug. 28, 1917.

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BURGLAR ALARM sYs'TEM. APPLICATION FILED AUGJ` 1916.

1 ,238,363. Patented Aug. 28, 1917.

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R. W. VAIL.

BURGLAR ALARM SYSTEM. APPLICATION FILED AUGJ. Igl.

1 ,238,363. Patented Aug. 28, 1917.

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Patented Aug. 28, 1917.

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Patented Aug. 28, 1917.

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R. W. VAIL.

'BURGLAR ALARM SYSTEM.

APPLICATION FILED AUG-7.19115.

Patented Aug. 28,1917.

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R. W. VAIL.

BURGLAR ALARM SYSTEM.

APPLICATION FILED AIJGJ. IsIs.

1 ,238,363. Patented Aug. 28, 1917.

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R. W. VAIL.

BURGLAR ALARM SYSTEM.

APPLICATION FILED AuG.1.1916.

1,238,863. Patented Aug. 28, 1917.

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R. W. VAI'L.

BURGLAR ALARM SYSTEM.

APPLlc/mou FILED Auw. 191s.

Patented Aug. 28, 1917.

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APPLICATION FILED AUG. 7. |916.

Patented Aug. 28,1917.

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lBUGLAB-ALBJM SYSTEM.

Specification of LettersPatent.

Patented Aug.. 23, lll.

Application med August?, 1916. Serial No. 133,669.

To @EZ whom t may conceive:

Be it known that l, ROBERT YW. VALL, a citizen of the United States, residing at ll ew York, in the county of New York and State of N ew York, have invented a new and useful Burglar-Alarm System, of which the following is'a specification. 4

The object of my invention is to provide a novel system for the protection of residences, banks, vaults, etc., against robbery. lt is also an object of my invention to provide a system to prevent the escape of convicts through windows, doors or walls of the prison and which will sound an alarm when any such attempt to escape is made. It is an lespecial 'object of my invention to provide a device havings a constantly traveling end less cord so disposed that any attempt to pass through windows, doors or walls where it is arranged will result in the immediate sounding of an alarm, and to provide a mechanism that cannot he successfully tampered with inasmuch as any interference with its predetermined and continuous movement will sound an alarm. lt is further my object to provide as a part of the system novel, preferably electrically controlled, alarm mechanism operatively connected with the mechanism protecting windows, doors, walls and so forth. lt isv further my object to provide novel combinations of continuously operating cords, wires or chains, whereby to increase the diiliculties of tampering with 'the system. It is also my object to provide novel means whereby any authorized person may shove aside `from doors or windows the mechanism disposed over such 'doors or windows, without interfering with the successful and continuous operation of the traveling' cords, wires or chains. lt is further my object to provide novel means for adjustingthe mechanism of the system and 'to provide novel arrangements and combinations of parts as more fully set forth hereinater in connection` with the accompanying drawings illustrative of the invention.

l attain the objects oi my invention by the mechanism illustrated in the accompanying drawings, in which- Figure l is a view of two windows illustrating the manner of disposing of lthe continuously traveling endless strand from one window to the other; Fig. 2 is an elevation of the invention applied to several stories of a house; Fig. 3 is a view oi' a window having extended casi'ngs in which the cont1nuously traveling strand is operated to prevent tampering; Fig. 4i is a view of the pipes used to incase the traveling cord when the invention is applied to the windows and doors of prisons; Fig. 5 is a view of the endless strand applied in a double diagonal arrangement to a window; Fig. 6 is a view of the endless strand applied in a horizontal arrangement across a window, with means for adjusting the device; Fig. 7 is a view of a window to which both an endless chain and an endless cord or wire are applied to increase the protection adorded by the system; Fig'. 8 is a vertical cross secs tion oi' Fig'. 7 Fig. 9 is a vertical cross section of F ig. l; F ig. 10 is a view showing the walls, ceilingv and floor of a room. reinforced and guarded by the invention; F ig. l1 is a front View of the mechanism for feeding the endless strand, with the electric alarm mechanism, the circuits of the alarm being shown in diagram; Fig. 12 is a rear view of Fig. 11; Fig. 13 is a view of a. compensating or adjusting device applied to the invention, a specially constructed lprotective door being shown'; Fig. 14: is a View of the compensating or adjusting'mechanism applied to the invention with an ordinary door; Fig. 15 is an end elevation of combined roller and ratchet driving mechanism. Fig. 16 isan enlarged detail of the governor mechanism; F ig. 17 is a horizontal section on line -25 of Fig. 16; Fig. 18 is a vertical section on line 26-26 of Fig. 17; and Fig. 19 is a detail of telescopic rod 97. i

Referring to the accompanying drawings, I provide a suitable cable l of any suitable material. Cable 1 travels over rollers 2, which are mounted on shafts or axles 3 which extend the width of the easement and are mounted in flanges i in easements 5. The flanges d extend the length of the casements and may be provided on opposite sides of the easement in Fig. 1, or a single iiange may be provided as in Fig. 6. The easements 5 are box-like structures having outturned or lateral flanges 6 fastened by bolts 7, as shown in Fig. 1i. Casements 5 are mounted as required. In Fig. 1 they are shown set into the lloor 8 and ceiling 9 by means of a trap 10 which is removably held in place by -bolts 11. The upper and lower easements 5 are fastened and supported by rods 12 on either side of the windows A. Connecting the two rods or standards 12 is a 'cross bar 13, supporting suitable anti-vibration rollers 14. As shown in Fig. 1, cable 1 enters through an aperture 15 into the easement 5 above one of the windows, passing through aperture 16 in the easement the latter aperture being alined with aperture 15 above the easement. The cable thence passes through an opposite aperture 16 in the easement and through an aperture 17 in trap 10, across the window A, and through a corresponding aperture 17 in the trap 10 below the window, and through aperture 16 in the end of easement 5 below the window, and around rollers 2, up and down across the window as shown until it has been completely protected and out through an aperture 19 in the end of easement 5 through the space between the members of the floor section 8. The cable 1 thence passes through an aperture 19 in the easement below the adjacent window, and is thence wound in and out in similar manner to that previously described so as to completely protect the window, and thence passing out through an aperture 20 in the ceiling member 9 of the seeond window. Casements 5 are secured in place by bolts 21.

Referring to Fig. 3, a modilied form of the invention is illustrated in which the easements 5 are disposed below the ceiling and above the floor, respectively. A single series of suitable rollers 2 are provided in each of the easements. 1n each of the four corners around the window 1 provide -an auxiliary extended protective mechanism,

consisting of an extension of the endless cable 1 over rollers 24 in a small auxiliary easement Casements 23 and 5 are interloclred by bolts 18, as shown in Fig. 9. rlhis arrangement renders tampering with the device much more diilicult, since any shifting of the wheels or cords will result in the ringing of an alarm by the means hereinafter described. The cable 1 traverses the small rollers 24, as shown in Fig. 3, after entering easement 23, and thence travels to the corresponding easement 23 below the window, thence from rollers 24 to rollers 2 back and forth across the window to the easement 23 in the opposite corner of the window, over the rollers 24, and to the fourth easement 23 and around the rollers 24, as shown in Fig. 3.

Referring to Fig. 4 there is shown a modilied form of the device in which the endless cable 1 traverses back and forth from the easements 5 above and below the window through suitable pipes 25. rllhese pipes are masses held in place by keeper rings 26, suitably secured to easements 5. Thls construction is especially designed for prisons and banks, where it may be desired to have the windows barred, in addition to the protection furnished by the alarm system. The pipes may be of any desirable dimensions and arranged wherever it is desired to extend the endless cable 1, and may be disposed between walls, between lloor and ceiling, or exterior to the walls.

Referring to Fig. 5, it is within the contemplation of my invention to provide an overlapping or double arrangement of endless cables to protect a window, door or other part of a building, such as illustrated in this view. The window frame is composed of easements 5 suitably bolted together. ln each of the easements 5 are mounted rollers 2. Cable 1 enters through a suitable aperture 27 and traverses rollers 2 in a dia gonally alined arrangement as illustrated across the window and thence out through a similar aperture 27. A second cable 1a enters through an aperture (not illustrated) similar to and alined with aperture 27, and thence traverses rollers 28 on opposite sides of flanges 4 from rollers 2, the cable 1a also being disposed in a diagonal arrangement across the window in the reverse direction from the arrangement of cable 1, as shown. It is however, within the contemplation of my invention to make any desired arrangement of two or more endless cables disposed at any desired. angle across a window or wall in an ,alarm system.

Referring to Fig. 6 another mode of arranging a protective endless cable over a door is shown. The outer portions of the door are formed by four easements 5, suitably fastened together by screws or bolts. Rings 42 are rigidly aliixed to one of the easements 5, and engage over pipes 30, as shown, to permit of swinging the door open.

1n Fig. 6 a horizontal arrangement of windings of the cable 1 is provided over a series of rollers 2 in opposite easements of the door, the cable being supported by antivibration rollers 14 mounted on a suitable cross bar 13. Cable 1 enters through a suitable pipe 1 and passes over suitable rollers 24 in a small easement 5 mounted to the ceiling, and thence through pipe 30 to the door easements 5. As a means of locking the door with the cable 1, a locking device or easement 33 is provided at one side of the door. This easement is provided with roll ers 31 mounted on a suitable flange 32 projeeting from the wall of the easement 33, as shown in Fig. 3. To open the door slack cable is given by means of the slack supply device, illustrated in detail in Fig. 17 and described more fully hereinafter, and the Cable slipped olf from rollers or guide wheels 31, and the door opened. To lock the door it is first closed and then the portions of the cable op posite to or in alinement with guide wheels 31 is slipped in place over these guide wheels, and the endless cable is then drawn oper atively taut by the slack supply device shown in Fig. 17. rlhe locking device may consist of one orA more guide wheels 31 in locking easement 33, as desired, such locking easement being accessible only to an authorized person. After cable 1 has traversed the door in any desired arrangement in the easements, such for example as illustrated in Fig. 6 it is then passed through pipe over rollers 2l in lower easement 5, and thence on to the alarm sounding meehanism hereinaiter described.

Referring to Figs. 7 and 8, an arrangement of my invention is illustrated in which a sprocket 'chain is operated in conjunction with the endless cable. l provide suitable casementsf mounted abpve and below the window C. These easements are provided `in one half with sprocket Wheels 62 over whichrun sprocket chains 63. 1n the opposite helft of each easement are mounted grooved rollers 22 over which cable 1 operetes. .As illustrated .in dotted lines in'this view., the chain and cable may operate in suitable pipes 25.

.Referring to Fig. 10, there is illustrated a method ci? protecting an entire room, all of the' yalarm mechanism being concealed. The mechanism consists er a series oi pipes 25, connected by suitable easements 5, the pipes being embedded in the wall. Within the pipes and easements an endless cable 1 operates as disclosed in other views.

Referring to Figs. 11 and 12, there is illustrated a method oipropelling the endless cable to ether with means for sounding the alarm w enever the endless traveling cable 1 is tampered with at any point. i provide two standards 65, connected at the upper end by a cross bar 6 8. @n member 66 are mounted shafts 67, on one end oi which are mounted small pinions 89. Mounted in bearings 70 on the standards 65 is a shaftV 71 on which are pinioiis 72 meshing` with the pimons 69. @n one end of the shalt 71 is a gear 78 which meshes with a gear 7l on the drive shaft ci' the motor 75, as illustrated in' Fig. 15. @n the face of the gear ,741 is mounted n beveled pinion 76 which `telescoping shift is meshed a pinion 77 on 78. Shaft 78 is mounted in bearings 79,' carried by the standard 65. Keyed to the lower member of the teleseoping shalt 78 is a beveled pinion 80, which meshes with a bevel gear7 81 on a shaft 82 supported in bearings 83 secured to asliding plate 84. The inner faces of the standards are provided with grooves 85 in which the member 8e has vertical movement. @n the lower end oi the shalt 78 is a beveled pinik io which is meshed a pinion 87 mountem ,on

a shaft 88 in bearings 89 carried by a plate 90, having a limited vertical movement relative to plate 84:,any suitable means (not 'tact 98 which acts as one pole of a switch controlled by governor 99 mounted on the shaft 97. The other pole of the switch is yattached to and controlled by the governor. The switch is normally held open when the device is running.

llhe shaft 82 has mounted thereon a series of beveled gears 100 which mesh with gears 101 mounted on stub shafts 102 carried by the movable plate 841. To the opposite end of the stub shafts 102 are mounted grooved rollers 103. Carried by one of the frame members 05 is a Contact member 1041 yand a corre spending contact member 105 is carried by the movable plate 8l. On the shaft 71 on the opposite end from the gear 7 3 is mounted a beveled pinion 106, to which is meshed a pinion 107 mounted on a yshaft 108. Shaft 108 is mounted in bearings 109 supported on a Standard110. Intermediate the end Ibearings 109 is a bearinglll which carries a Contact member 112 forming one pole of a switch, the other pole of which is carried and controlled by the governor 113. The movable plate 8l also carries a projection 114 to which is connected a cable 115. Cable 1.15 is guided over` rollers 116 which are mounted on an arm 117 secured to the standard 65. Cable 115 leads to and is connected with a suitable alarm or pull bell 118.

Mounted in' a sup ort 119 is a E@governor 120, the lower end l' 1, of which constitutes one pole of a switch. The opposite pole 122 of the' switch is carried by the frame. The `governor shalt 123 has mounted on its lower end a beveled pinion 124C which is in mesh with a beveled pinion 125. Member 125 is mounted on stub sha-ft 126 which is mounted in any suitable bearings 172 carried by the frame 119. On shaft 126 is mounted a large grooved wheel 127 over which cable 1 travels. y The endless cable 1 is fed in over a roller 128 carried by the upper end of the standard 65, thence over the rollers 68 to the rollers 103 and bachv and forth to the center o the device where it is led upward over the vcd wheel 127 and back again to the 103, Vthence back to the rollers 68 and back and forth to the other standard where it is again carried ed over a corre- ,spending roller 128 and thence to the protected windows or elsewhere out through the system.

Whenever the endless cable strung across windows, doors or elsewhere is tampered with, should the cable be broken or severed it will result in the retarding of governor 120, gravity will cause the arms of the governor to lower and thus lower pole 121 into contact with pole 122,. closing the circuit and thereby sounding the alarm. Should the endless cable be pulled or stretched out of its normal position the increased tautness will tend to lift the plate 84, thereby raising the contact finger 105 into contact with the finger 101, tl us closing a circuit and sounding an alarm.

YWhen endless chain 63 is employed in the mechanism, if the chain is tampered with the governor 99 will be retarded and its pole moved into electrical contact with contact- 98. This operation occurs through the gears 93 which mesh with gears 92 on shaft 88, thence through gear 91 to the nieshed gear 96 on shaft 97, which drives the governor 99.

Referring to Figs. 13 and 14 means for.

locking and for releasing doors protected by my alarm system is illustrated. Fig. 13 illustrates the invention applied to a glass paneled door, to permit of its being released from sealed position by any authorized person. rlhe framework of the door comprises easements 5 secured to each other as shown in detail in Fig. 6, in which is mounted a glass panel. At one side of the door, near the upper portion and opposite from the hinge side is mounted a small easement 129, one side of which is fastened rigidly to the wall. The other half of the easement is removably or release-bly mounted to the fixed portion of the easement. The removable portion is held in place by bolts 130. Mounted within the fined or rigid half of the easement 129 are suitable grooved rollers 131 (two being illustrated. in Fig. 13) over which cable 1 from the door is led. rl`he cable passes through apertures 132 in the edge of the door Casement. Each of the halves of easement 129 is provided on forward side with registering notched portions forming apertures 133, through which cable 1 travels to and over rollers 131.

li'lidway the pipe 29 intermediate its ends there is provided a easement 134 carrying two small grooved rollers 135. Mounted on the wall on the hinged side of the door is a plate 136 provided at each of its longitudinal edges with cleats 137. A easement 138 is provided, carrying a single roller 139 over which the cable 1 travels. rear half of easement 138 is provided with lateral tongues 140 which entend under cleats 137. Provided on the rear of lessees easement 138 is a slotted projection 141, extending through which is a suitable set screw 142 mounted to a plate 143 on the rear end of the plate 136.

When it is desired to open the door and additional slack is required to prevent breakage of the cable 1, the set screw 142 is released and the easement 138 moved forward by means of the slotted projection 131, suiicient to allow the roller 139 to supply the slack to the door cables.

Upon releasing bolts 130 'the outer half of easement 129 may be removed, `thereby` giving Veasy access to rollers 131. Cable 1 may then be slipped olf from rollers 131, thus permitting the door to be swung open without stopping the operation of the endless cable.

In Fig. 14 there is illustrated a means for protecting an ordinary wooden door. A small easement lflicontaining a single roller 145 is fastened to the door. To the locked side of the door is a easement 129 containing a single roller 146, over which the cable 1 is operated. To the wall on the hinge side of the door is mounted a plate 136 provided with cleats 137, under whichv are disposed extensions 140 of the rear end of a easement 138, each half of which carries a roller 147, as illustrated. A small plate 148 carrying two antifriction rollers 149 is fastened to the wall, over which the cable runs.

The cable is led in over one roller 149, thence over one of the rollers 1117 to and through the easement 145 on the door and over the roller 1116, carried in easement 149. Thence it is led back and through the casement llelagain, and thence to the easement |138, over roller 1d? and roller 149. f

When it is desired to open the door the set screw 112 securing the easement 138 in fixed position is released, permitting the easement 138 to be slid forward, thus giving slaclr` to cable 1, and permitting the portion of cable 1 traveling over roller 146 to be removed therefrom. lll/'hen this is done the door may be opened, and without interrupting the operation of the alarm mechanism. Casement 129 is normally secured in locked position, so that only authorized person ay have access to it.

Referring to Fig. 15, there is illustrated operatively combined means for driving both rollers and rate iets. where both cords and chains are employed to complete the 'protective mechanism.

Referring to Fig. 13 there is illustrated an enlarged detail of the governor mechanism.

Referring to 1'? there is illustrated horizontal section through governor shaft 123 and showing the guides 159 by which 'the governor piate 139 is retained l thence over in engagement with the lower end 121 of the governor, the latter member being vertically movable but non-rotatable by reason of the engagement of extended portions or arms 161 in slotted portions 162 of the governor frame member 119. Fig. 18, which is a vertical section through Fig. 17, further illustrates the detailed construction of the governor mechanism.

Referring to F ig. 19 there is illustrated in detail the means for the telescopic operation of governor shaft 97. One section of shaft 97 is rigidly secured to a suitable sleeve 163 within which the other section of shaft 97 is slidably mounted but retained against rotation by means of a suitable projection 1651 slidably positioned withink an interior vertical groove 165 in sleeve 163.

The operation of the invention has been set forth in connection with the foregoing description of the construction disclosed in the views described. The cable 1 is continuously traveling and as it is taut, any stretching or movement out of its regular path will exert such tension on the alarm mechanism as to reduce the speed of the governor, close the switch, and thus sound the alarm in consequence of the closing of the switch. It is within the contemplation of my invention to provide either a cable, a chain or a. wire as the continuously travelin element, and the words ,traveling element when used in the claims are tobe construed as referring to any of the foregoing members. lt is also Within the contemplation of my invention to provide any suitable form of incasing mechanism for the endless traveling element. The drawings illustrate my preferred form. It is further within the contenu lation of my invention to provide any suitab e form of grooved roller or wheel for mounting and supporting the cables or chains, and the word roller as used in the claims shall be construed as applying to any suitable rotatable element adapted to support the traveling element. l may provide suitable Weights, such as removable weights 170, illustrated in Fig. 28, these weights being attached by any suitable screws as illustrated in Fig. 28, in connection with the propelling mechanism to compensate for the weight of an unusually long traveling element, and similarly to compensate for the diminished weight by its subtraction if an extra short traveling element is employed, thus keeping the endless traveling element taut through,

out its length. any separation or movement of the parallel lengths of the endless cable at any angle to their line of travel in even a slight degree will suiiiciently retard the governor as to cause the alarm to be sounded.

What l claim is: 1. ln apparatus of the class described, the combination of an endless traveling l Ielement arranged across or adjacent to por tions of a structure to be protected, and means for mounting the endless traveling element. v

2. In burglar alarm mechanism, the combination of an endless moving cable having parallel lengths operating across `or adjacent to portions of a structure .to be protected, and spaced means for mounting the endless cable.

3. In burglar alarm mechanism, the combination of an endless traveling element arranged to operate adjacent to portions of a structure to be protected, means incasing the endless traveling element, and ,means supporting the cable in operative positions.

4. In burglar 'alarm mechanism, the combination of a plurality of endless traveling elements each element `being disposed to cause adjacent portions of that element to travel in substantially parallel relation across portions of a structure to be protected, and means for supporting the endless cables in close but spaced relation to each other.

5. In burglar alarm mechanism, the combination' ofran endless traveling cable, roller members over which the cable operates, casements, means for mounting the roller inembers within the easement, the walls of the casements having apertures for the passage of the traveling cable.

6. ln burglar alarm mechanism, the combination of an endless traveling element, rotatable members over which the traveling element operates, easements, means for mounting the rotatable members within the easements, the walls of the easements having apertures for the passage of the traveling chain.

7. ln burglar alarm mechanism, the com'- `bination of an endless traveling element,

rotatable elements over which the traveling element operates, easements having` parallel Walls, means for mounting the rotatable elements within the parallel walls, the Walls having apertures for the passage of the traveling element.

8. 1n burglar alarm mechanism, the combination of an endless traveling element, rotatable elements over which the traveling elements operates, easements having dependn ing interior flanges, means .for mounting the rotatable elements to the depending d. i the walls of the casements having for the passage of the traveling elf 9. A burglar alarm apparatus liar combination an endless Irtra'vein/ig c rotatable members over which the tra-v element operates, means for mounting the rotatable elements in substantially pareille spaced but close relation across portions of a structure to be protected against unauthor4 ized entry, and an alarm mechanism operatively connected with the travewng element a. arranged to be sounded when normal s CFR movement or" the traveling element is int/ererecl with by breaking, stoppage, stretching, retardation or any movement from its normal operating; positions.

l0., Il burglar alarm apparatus having in combination an endless traveling element, means operatively supporting the aforesaid member in spacecl to a structure or part thereof to be protectecl, an electric switch, governor mechanism maintaining the switch in predetermined position during the continuous operation of the traveling element and reversing its position upon interference with the regular movement orn the traveling element, an alarm electrically connected with the switch and operated therefrom.

ll. A burglar alarm apparatus having in combination a continuously moving endless traveling" element, rneans supporting the travelingelement in any desired operative position adjacent to Walls, floors, etc., to protect a building or other structure, an alarm mechanism, an electric suf'itcli, means normally holding the switch in open position, means operatively connecting the switch and endless traveling element to sounfl the alarm upon any interruption of the movement o1? 'the endless traveling `element.

A burglar alarm apparatus having in combination endlos" traveling elements,

ineans su.pportinlrr`3 the aforesaid endless elein jiuXtapositi-on in any desired operposition adjacent to Walls, doors, etc., to pro ling or other structure from rect a or burglary, a plurality of electrically operatecl alarms, ojove Mor switches for the alarms, a

aperatively connected mecha- 'tlie traveling elements, cir- 'l Y to electrically operate all upon operation,- o any oit' the saitl switches beingq actuated by ference with the continuous travel enfile-ss element.

i burglar al? apparatus havingl in ation an e iss traveling clement cl in protec ve position relative to lls of a builrling, roller means -or saine, mechanism propelling the raveline` element, an alarm, a governor operatively connected to the propelmechanism having a switch element arose an electric circuit upon un teriierence the movement element by its stoppage, res` ance and 'the lilre, anti an ircin arranged to sounfl the alarin sivitcl, controlled by the alarms onrouar alarm apparatus navi-ng in .L z, endless traveling; element,

parallel lengths adjacent naa-ases enit, mechanism propelliire,n the traveling element, an alarm, a circuit aclapte. to electrically connect the alarm with a. governorcontrollecl switch, and a governor-controlled switch normally helcl open by the normal operation of the mechanism propelling the traveling element and arranged to close and sound the alarm upon the occurrence of tanipering or interference with the normal continuous operation of the traveling elementIn l5. A burglar alarm apparatus having in combination an endless traveling element, means supporting saine in operative position, a motor propelling the endless travelingq elenient, an electric circuit electrically connectecl with the motor, an alarm, a circuit adaptell to electrically connect the motor the alarm, a governor switch in the circuit maintained in open position by the normal operation of the mechanism and to be Yallow the governor switch to close by gravity and souncl the alarm, substantially' set forth.

16. ln apparatus ci the class described, the combination of an alarm, an electric circuit, a governor-contro leal switch the circuit, means for retaining tae switch in nonrotatable but vertically movable relation'to the governor by which it is controllecl, a propelling device for continuously operating endless traveling elements, operative sliai't anrl gear connections between the propelling rlevice anti the governor-controlled switch, electrical means inclutling an electric supply cable electrically actuatingv the propelling clevice, whereby cutting1 of the electric supply cable will release the governor from open position and sound the alarml?, ln apparatus or the class olescrihecl, the combination. of an alarm, an electric alarm circuit, governor-controlled mechanism in the circuit the circuit'being7 liel open by the normal operation of the governor, an enoiless traveling element operatively related to the governor and upon the continuous movement ont which the normal operation of the goyernor is deterininefl, an electric motor, a motor shalt to which the governor mechanism is directly oeare., anti; an electric su ry cable the cutting which.

` tions between the elements set forth, whereby interference with the normal operation of any portion of the traveling element of the elements of the apparatus will sound all the alarms, substantially as described.

19. A burglar alarm system having in combination an endless traveling element, incased means supporting the endless traveling element in operative position in interlaced preferably `parallel disposition over doors and windows, auxiliary incased doorlocking means mounted at one side of a door or the like for releasably retaining a portion of the endless traveling element 1n position across the edge of, and locking the door, slack-giving mechanism on theoppo'site side of the door over which a portion of the endless traveling element operates adapted to give sufcient slack to permit an authorized person to disenga e the traveling element from the door loc ng means to open the door-without sounding the alarm, anl electrically operated propelling device driving the endless traveling element, a governor operatively connected with the propelling device, an electric circuit normally kept open by the normal operation of the governor, and an alarm arranged to be sounded when any of the aforesaid mechanism is vtampered with..

20. A burglar alarm system having in combination an endless traveling element,- incased means supporting the aforesaid traveling element in operating position adjacent to walls, doors, spaces, etc., to be protected from unauthorized entry or exit, means slidably mounted on opposite sides of windows, etc., for supporting the endless traveling element across the window and 'adapted to be moved to one side of the window to leave it clear, compensating mechanism to give slack to the traveling element to admit of its being moved to one side of a window from its normal position to leave the window clearto any authorized person, electrical means propelling the endless travcling element, a governoroperatively connected. with the propellin means, anlalarm electrically associated wlth the governor and arranged to be sounded upon any retardation of the governor.

21. InA apparatus of the class described, the combination of auxiliary incased protectin mechanism mounted'at one side of a door for releasably retaining a portion of the endless traveling element in protective position, slack-giving mechanism on the opposite side of the door over which a portion of the endless traveling element operates, and an endless traveling element.

22. In apparatus of the class described, the combination of means slidably mounted on opposite sides of windows, etc., for supporting the endless traveling element across the window and adapted to be moved to one normal position, whereby to leave the window clear. ,Y n

23. In combination with a burglar alarm apparatus, an endless traveling element, a

door comprising a plurality of box-like easements secured one to the other, depending flanges extending longitudinally within the casements, grooved roller members mounted in rotatable relation and alined position on the easement fianges, the casements having orifices for the entrance and exit of the traveling element, substantially as and for the purposes described.

24. In combination with a burglar alarm device, a easement comprising llke hollow members each having outturned abutting flanges, means fastening the easement members in alined abutment, flanges within the easement members, rollers mounted to the flanges, said easement having orifices for the passage of a traveling element, for the purposes described.

25. In apparatus of the class described, the combination of easement members mounted to opposite sides of a window frame, the, easements having longitudinally grooved bars, slide blocks slidably mounted to the grooved bars, rollers mounted on the slide blocks, an endless traveling element interlaced over the rollers and across the window space, and means adapted to engage opposite slide blocks for movin the mechanism to one Aside to leave t e window space clear, substantially as described.

26. In lburglar alarm mechanism, a slack supplyingdevice comprisinga frame having a crossbar at its upper end, rollers mounted on the crossbar, grooved guide bars extending longitudinally of the iframe, ton ed blocks slidably mounted to the guide ars, blocks adjustably mounted on the tongued blocks, rollers mounted on the latter blocks, an endless traveling elementinterlaced over the rollers, means attached to the frame for adjustably controlling the position of the tongued blocks, and fastening means for the respective block members, whereby the blocks may be adjusted to supply slack to the traveling element, substantially as described.

27. In burglar alarm apparatus, mechanism for blocking and releasing a door` by means of a traveling cable, comprising a` door having rollers mounted thereon, a traveling element interlacedl over the rollers, an apertured easement mounted to the wall opposite the hinge side of the door, a roller in the Casement releasably supporting the traveling element, and a slack-giving device mounted to the wall on the hinge side of the door.

28. In apparatus of the Yclass described, mechanism forl locking and releasing a door by means of a traveling cable, comprising means for engaging the cable to mechanism mounted at one side of the door, and a slack-giving device on the opposite side of the door consisting of a plate mounted to the Wall the plate having longitudinal cleats,

Y* a easement having lateral tongues extending under the aforesaid cleats, a single roller mounted in the easement and Supporting-'the traveling cable, a slotted projection on the easement, and a fastening member mounted in the slotted projection, whereby to adjust the easement in the desired position to provide slack. cable, substantially as and for the purposes described.

ROBERT W. VAIL. 

